SSC CHSL exam reasoning study material: Mathematical Operations-I

Tarun Mogha

Apr 11, 2018 16:35 IST

ssc chsl mathematical operations

In SSC CHSL exam, there are at least 1-2 questions from Mathematical operations topic of verbal reasoning. This topic is very important and confusing as well. Sometimes, questions are so tricky that you cannot afford them even to try. However, the difficulty level of questions is kept easy unless you understand the solving methods and types of framed questions.

In this article, you will get a set of 10 questions on Mathematical operations of reasoning section with explanations. All types of questions from easy level are described in the following text. Just go through and solve them verbally-

4. Which one of the following four interchanges in signs and numbers would make the given equation correct? 23 + 3 x 9 = 45a. + and x, 3 and 23b. + and x, 23 and 9c. + and x, x and -d. None of theseAns.:-d.Explanation:- Considering each case separately-a) Making the interchanges given in (a.), we get 3 x 23 + 9 = 45; 78 = 45, which is false.b) Making the interchanges given in (b.), we get 9 x 3 + 23 = 45; 50 = 45, which is false.c) Making the interchanges given in (c.), we get 23 x 3 - 9 = 45; 60 = 45, which is false.Hence, Option (d.) is the correct answer.